PHASE TRANSITION IN THE NU = 2 BILAYER QUANTUM HALL STATE
PHASE TRANSITION IN THE NU = 2 BILAYER QUANTUM HALL STATE
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NU = 2 双层量子霍尔态的相变
DOI：
10.1103/physrevlett.80.4534
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发表时间：
1998
影响因子：
8.6
通讯作者：
A. Urayama
中科院分区：
文献类型：
--
作者：
A. Sawada;Z. F. Ezawa;H. Ohno;Y. Horikoshi;Y. Ohno;S. Kishimoto;F. Matsukura;M. Yasumoto;A. Urayama
通过改变两个量子威尔斯中的总电子密度和密度比，测量了填充因子nu=2，1和2/3时双层量子霍尔态的霍尔平台宽度和激活能.他们的行为彼此之间有着显著的不同。nu=1态在密度差的所有测量范围内都是稳定的，而nu=2/3$态只在平衡点附近是稳定的。另一方面，\nu=2的状态显示出随着电子密度的改变而在这两种状态之间的相变。
The Hall-plateau width and the activation energy were measured in the bilayer quantum Hall state at filling factor \nu=2, 1 and 2/3, by changing the total electron density and the density ratio in the two quantum wells. Their behavior are remarkably different from one to another. The \nu=1 state is found stable over all measured range of the density difference, while the \nu=2/3$ state is stable only around the balanced point. The \nu=2 state, on the other hand, shows a phase transition between these two types of the states as the electron density is changed.